Home / 209,952,666.30-314,928,999.45-128,323,328.70

Finding the Fourth Proportional to 209,952,666.30, 314,928,999.45 and 128,323,328.70

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Solution

The fourth proportional to 209,952,666.30, 314,928,999.45 and 128,323,328.70 is: 192,484,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,666.30 : 314,928,999.45 = 128,323,328.70 : x
  2. Step 2: Convert to fraction form
    209,952,666.30/314,928,999.45 = 128,323,328.70/x
  3. Step 3: Cross multiply
    209,952,666.30x = 314,928,999.45 × 128,323,328.70
  4. Step 4: Simplify right side
    209,952,666.30x = 40,412,737,513,584,472
  5. Step 5: Solve for x
    x = 40,412,737,513,584,472/209,952,666.30
  6. Step 6: Final answer
    x = 192,484,993.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.